West Sussex · England
Window & door mastic in Tower Hill, West Sussex
Problem with your window and door frames in Tower Hill? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Leaking joints at the ends of sills
- Cracked internal joints between frame and plaster
- Rain getting in at the frame or under the sill
Window mastic in Tower Hill, done properly
Homes in Tower Hill have every kind of window: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We’re often asked to deal with mastic that’s falling out in pieces and cracked or shrunken mastic around the frame, on aluminium frames, patio & French doors and uPVC windows.
Somewhere as small as Tower Hill, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Tower Hill (RH13)
- Region
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Places near Tower Hill
Other services in Tower Hill
Leave it or put it right?
The work is quick compared with the damage it prevents: the visit takes most of a day for a typical house, less for a few frames. Wait for damp to appear and there may be plaster and decorating to sort out too. Where a wall is exposed, as many are in small places like Tower Hill, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Why us?
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
- Approved under the ARBOMaster scheme
- Colour picked to suit the job
Take a look at how sealant jobs are priced and what customers say.
Common problems we fix in Tower Hill
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Signs it’s time to call us include:
- Leaking joints at the ends of sills
- Hard, cracked sealant around windows
- Rain getting in at the frame or under the sill
- Untidy mastic left by window fitters
If you look after a building such as St John's Catholic Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- What insurance they hold
- When the joint can take water or movement
- Is the old sealant removed completely?
- What guarantee comes with the work
Your questions about window mastic in Tower Hill
Is Tower Hill within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you do window mastic in Tower Hill?
Yes. Our work covers London and the South East, and Tower Hill is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Do the sealants smell?
Some sealants have a smell while they cure. Opening a window helps.
Can I paint over the new sealant?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Can you get sealant to suit coloured frames?
Yes, in most cases. Mention the frame colour when you ask for a quote and we’ll use the nearest match.
When it is not the sealant
In fairness, some problems need a different trade:
- Damp problems in the wall away from the window
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Where we work in Tower Hill
- Window sills
- Composite doors
- Aluminium frames
- Timber windows & doors
- Patio & French doors
- uPVC windows
Looking after it afterwards
Once the sealant has cured, a few habits help it last:
- Repaint timber before it’s bare
- Keep solvents and bleach off the sealant
- Keep jet washers away from the mastic
- Wipe condensation off the frames
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Catching it early keeps the fix to a reseal.
For landlords and businesses
If you manage several properties in or around Tower Hill, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and photos by email help.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
What window mastic looks like in Tower Hill
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Parish Church of St Mary include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Christs Hospital station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Tower Hill is about 1 mile south-west of Horsham, in West Sussex. Tower Hill gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Tower Hill is one of 371 towns and villages in West Sussex we cover. Our Crawley page covers work nearby (8 miles or so).
Postcode districts we cover here for window mastic: RH13. Local streets include Tower Hill, Tower Close and Salisbury Road. Neighbouring places we cover for window mastic include Broadbridge Heath (1 mile north-west), Horsham (1 mile north-east), Southwater (2 miles south), Itchingfield (2 miles west) and Warnham (2 miles north). We also work in nearby towns such as Crawley (8 miles north-east), Haywards Heath (11 miles east), Burgess Hill (11 miles south-east), East Grinstead (15 miles east), Shoreham-by-Sea (15 miles south) and Broadfield (7 miles north-east).
What’s near Tower Hill
We work in homes and buildings around Tanbridge House School, Warnham Park and The Doyle School of Design and Technology, among other places. Tower Hill’s nearest station is Christs Hospital station, roughly 0.9 miles west of the centre. Nearby you’ll also find Horsham Hospital (1.3 miles north-east) and Christs Hospital School Museum (1.1 miles south-west). The countryside around Tower Hill includes Warnham LNR.
How it works
At the end, we look at the finished work together. The work normally takes anything from an hour or two to a full day, depending on how many frames there are, depending on how much there is to do. Somewhere like Tower Hill needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.